A045204 - OEIS

%I #13 May 21 2023 00:20:49

%S 24,49,74,99,109,114,119,121,122,123,174,199,224,234,239,244,246,247,

%T 248,299,324,349,359,364,369,371,372,373,424,449,474,484,489,494,496,

%U 497,498,534,539,544,546,547,548,559,564,569

%N Numbers whose base-5 representation contains no 0's and exactly two 4's.

%t Select[Range[600],DigitCount[#,5,0]==0&&DigitCount[#,5,4]==2&] (* _Harvey P. Dale_, Dec 03 2021 *)

%Y Cf. A007091.

%K nonn,base

%O 1,1

%A _Clark Kimberling_